Q. Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?

A) SrSO₄
B) CaSO₄
C) BeSO₄
D) BaSO₄
Explanation

[Solution from source] The small Be²⁺ ion has a very high hydration enthalpy that exceeds the lattice enthalpy of BeSO₄, so BeSO₄ is soluble. For Ca, Sr and Ba sulphates hydration enthalpy falls below lattice enthalpy, making them sparingly soluble. Answer (3).

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.

Want to attempt the full paper?
View Full Paper Take Full Paper Online